Cylindrical grinding machine axial positioning device with self-locking function

Abstract

The utility model relates to a cylindrical grinding machine axial positioning device with a self-locking function. The axial positioning device is provided with a positioning plate fixed to a T-shaped groove in the front side of the axial moving platform. The positioning plate is parallel to the axis of the axial moving platform; multiple groups of positioning grooves are formed in the lower end surface of the positioning plate; the axial positioning device is further provided with a positioning locking mechanism. A mounting shell of the positioning and locking mechanism is fixed on the front side wall of the grinding machine base; an ejector rod and a spring are arranged in the cavity of the mounting shell, and a cover plate is fixed at the bottom of the cavity of the mounting shell; the upper end of the ejector rod is of a structure matched with the positioning groove. An annular protrusion is arranged on the ejector rod. The spring is mounted between the annular bulge and the cover plate; the lower end of the ejector rod extends out of the cover plate and is connected with a pedal; and the pedal plate is fixed on the front side wall of the grinding machine base. According to the utility model, the accurate and convenient axial positioning on a common cylindrical grinding machine is realized, the locking function is realized, and the processing efficiency and the processing qualification rate are effectively improved.

Description

Technical Field

[0001] The utility model relates to an auxiliary tool used for machining the outer circle of shaft parts, in particular to an axial positioning device of an outer circle grinder with self-locking function. Background Art

[0002] Camshafts are key parts for automobiles, motorcycles, and internal combustion engines. With the rapid development of the automobile industry and the internal combustion engine industry, the demand for camshafts is increasing. The external cylindrical processing of camshafts is generally carried out using ordinary external cylindrical grinders. Ordinary external cylindrical grinders include a grinder base, an axial movable platform, and a grinding wheel motor. The axial movable platform is horizontally arranged on the upper guide rail of the grinder base. The disadvantage is that this ordinary external cylindrical grinder can only achieve axial displacement by manually controlling the axial position disk. Whether the position is accurate depends on naked eye observation. Errors will occur during the process of naked eye observation. The operator cannot quickly and accurately locate the axial position, which reduces the processing efficiency and processing qualification rate. Summary of the invention

[0003] The purpose of the utility model is to provide an axial positioning device for an external cylindrical grinder with self-locking function, so that it can be accurately and conveniently positioned on a common external cylindrical grinder, reduce human factors, and effectively improve processing efficiency and processing qualification rate. The axial positioning locking mechanism for the external cylindrical grinder.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] An axial positioning device for an external cylindrical grinder with self-locking, the axial positioning device comprises a positioning plate fixed on the T-slot on the front side of an axially movable platform; the positioning plate is parallel to the axis of the axially movable platform; the lower end surface of the positioning plate has multiple groups of positioning grooves; the axial positioning device also comprises a positioning and locking mechanism fixed on the front side wall of the grinding machine base; the mounting shell of the positioning and locking mechanism is fixed on the front side wall of the grinding machine base; a push rod and a spring are arranged in the cavity of the mounting shell, and a cover plate is fixed on the bottom of the cavity of the mounting shell; the upper end of the push rod is a structure that cooperates with the positioning groove; the push rod has an annular protrusion; the spring is in a compressed state and is installed between the annular protrusion and the cover plate; the lower end of the push rod extends out of the cover plate and is connected to the foot pedal through a connecting rod; the foot pedal is fixed to the front side wall of the grinding machine base through a hinge rod, so that the push rod is extended and retracted under the control of the foot pedal and the spring in the mounting shell, so that the upper end of the push rod cooperates with the positioning groove to complete the positioning and locking function.

[0006] The spacing between two adjacent groups of positioning grooves matches the spacing between two outer circles on the camshaft to be processed, and the number of the positioning grooves is the same as the number of the outer circles on the camshaft to be processed.

[0007] The positioning plate has a positioning protrusion that matches the T-shaped groove of the axial moving platform 2.

[0008] The positioning groove is a V-shaped structure, and the upper end of the push rod is a V-shaped protrusion matched with the positioning groove.

[0009] The utility model provides an axial positioning device for an external cylindrical grinder with self-locking function. By adopting the above technical scheme, the device can realize accurate and convenient axial positioning on an ordinary external cylindrical grinder and has a self-locking function, thereby reducing the influence of human factors, effectively improving the processing efficiency and processing qualification rate, and has a simple structure and is easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the main structure of the utility model.

[0011] Figure 2 It is a schematic left view of the structure of the utility model.

[0012] Figure 3 This is a schematic diagram of the positioning plate structure of the utility model.

[0013] Figure 4 for Figure 3 Side view of.

[0014] Figure 5 , Figure 6 It is a schematic diagram of the structure of the positioning and locking mechanism of the utility model.

[0015] Figure 7 , Figure 8 It is a schematic diagram of the top rod structure of the utility model.

[0016] In the figure: 1. grinder base; 2. axial moving platform; 3. positioning plate; 31. positioning plate mounting hole; 32. positioning groove; 33. positioning protrusion; 4. first screw; 5. positioning locking mechanism; 51. push rod; 52. mounting shell; 53. spring; 54. second screw; 55. cover plate; 56. V-shaped protrusion; 57. annular protrusion; 59. push rod connecting hole; 6. third screw; 7. connecting rod; 8. foot pedal; 9. hinged rod; 10. T-shaped nut; 11. first nut; 12. second nut. DETAILED DESCRIPTION

[0017] The utility model is described in detail with reference to the accompanying drawings and specific embodiments:

[0018] like Figure 1 , Figure 2As shown, an axial positioning device for an external cylindrical grinder with self-locking function, the axial positioning device comprises a positioning plate 3 fixed on the T-shaped slot on the front side of the axial movable platform 2; the positioning plate 3 is fixed on the T-shaped slot on the front side of the axial movable platform 2 by a first screw 4 and a T-shaped nut 10, ensuring that the positioning plate 3 is parallel to the axis of the axial movable platform 2, combined with Figure 3 , Figure 4 The lower end surface of the positioning plate has multiple groups of positioning grooves 32; the spacing between two adjacent groups of positioning grooves is adapted to the spacing between two outer circles on the camshaft to be processed, and the number of positioning grooves is the same as the number of outer circles on the camshaft to be processed; the positioning groove is a V-shaped structure, and the positioning plate 3 has a positioning protrusion 33 that matches the T-shaped groove of the axial movable platform 2; the positioning plate 3 is parallel to the axis of the axial movable platform 2; the axial positioning device also has a positioning locking mechanism 5 fixed on the front side wall of the grinding machine base; combined with Figure 5 , Figure 6 , Figure 7 , Figure 8 The mounting shell 52 of the positioning and locking mechanism 5 is fixed on the front side wall of the grinding machine base 1; a push rod 51 and a spring 53 are provided in the cavity of the mounting shell 52, and a cover plate 55 is fixed to the bottom of the mounting shell cavity; the upper end of the push rod 51 is a V-shaped protrusion 56 that cooperates with the positioning groove 33; the push rod 21 has an annular protrusion 57; the spring 53 is in a compressed state and is installed between the annular protrusion 57 and the cover plate 55; the lower end of the push rod 21 extends out of the cover plate and is connected to the foot pedal 8 through the connecting rod 7; the foot pedal 8 is fixed to the front side wall of the grinding machine base through the hinge rod 9, constituting a structure in which the push rod is extended and retracted under the control of the foot pedal and the spring in the mounting shell, so that the upper end of the push rod is positioned in cooperation with the positioning groove.

[0019] When using the utility model, the following steps are included:

[0020] 1. Assembly of the positioning locking mechanism 5: first install the push rod 51 into the cavity of the mounting housing 52 as required according to the structural diagram of the positioning locking mechanism, install the spring 53 between the cavity of the mounting housing 52 and the outer circle of the push rod 51, cover the cover plate 55, and fix the cover plate 55 and the mounting housing 52 together by the second screw 54;

[0021] 2. Installation of the positioning locking mechanism 5, according to Figure 1 The structural front view diagram requires that the positioning locking mechanism 5 be fixed to the front side wall of the grinding machine base 1 by means of a third screw 6;

[0022] 3. The installation of the pedal 8 should be in accordance with Figure 1The main structural diagram requires that the foot pedal 8 be connected to the front side wall of the grinder base 1 through the hinge rod 9, and the foot pedal 8 can rotate around the hinge rod 9. One end of the connecting rod 7 is inserted into the top rod connecting hole 59 of the top rod 51, and the top rod 51 and the connecting rod 7 are fixed together by the first nut 11. The lower end of the connecting rod 7 passes through the through hole on the foot pedal 8, and the connecting rod 7 and the foot pedal 8 are fixed together by the second nut 12. Adjust the first nut 11 and the second nut 12 to make them in appropriate positions to ensure that stepping on the foot pedal 8 can drive the telescopic movement of the top rod 51 in the positioning locking mechanism 5.

[0023] 4. Place the camshaft product to be processed on the external cylindrical grinder, press the center holes on both sides of the camshaft product to be processed with the top of the external cylindrical grinder, align the first shaft diameter on the camshaft with the grinding wheel, return the grinding wheel to a safe position after aligning, install the positioning plate 3, ensure that the first positioning groove 32 of the positioning plate 3 matches the positioning surface 56 of the push rod 51 in the positioning locking mechanism 5, fix the positioning plate 3 on the axial movable platform 2 by the first screw 4 and the T-nut 10, ensure that the movement of the axial movable platform 2 drives the movement of the positioning plate 3.

[0024] 5. After the grinding of the first shaft diameter of the camshaft is completed, the grinding wheel is retreated to a safe position, and the foot pedal 8 is stepped on to move the axial movable platform 2 to drive the positioning plate 3 to move, and the second positioning groove 32 on the positioning plate 3 is aligned with the positioning surface 56 of the push rod 51 in the positioning locking mechanism 5. At this time, the movement of the axial movable platform 2 is stopped, and the foot pedal 8 is released. At this time, the position of the grinding wheel is just aligned with the second shaft diameter of the camshaft, and the outer cylindrical size of the product is ground one by one.

[0025] This simplifies the process of workers judging the axial position with the naked eye. They only need to perform simple axial displacement of the common cylindrical grinder according to the previously debugged product and the corresponding positioning plate 3, which improves production efficiency and ensures the accuracy of the workpiece. Steps 1, 2 and 3 are required when the device is assembled for the first time. The subsequent product processing only requires the debugging of steps 4 and 5.

[0026] The above disclosure is only a specific embodiment of the present invention, but the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. An axial positioning device for a cylindrical grinder with self-locking function, characterized in that: The axial positioning device comprises a positioning plate fixed on the T-shaped groove on the front side of the axial movable platform; the positioning plate is parallel to the axis of the axial movable platform; the lower end surface of the positioning plate has multiple groups of positioning grooves; the axial positioning device also comprises a positioning and locking mechanism fixed on the front side wall of the grinder base; the mounting shell of the positioning and locking mechanism is fixed on the front side wall of the grinder base; a push rod and a spring are provided in the cavity of the mounting shell, and a cover plate is fixed to the bottom of the cavity of the mounting shell; the upper end of the push rod is a structure that cooperates with the positioning groove; the push rod has an annular protrusion; the spring is in a compressed state and is installed between the annular protrusion and the cover plate; the lower end of the push rod extends out of the cover plate and is connected to the foot pedal through a connecting rod; the foot pedal is fixed to the front side wall of the grinder base through a hinge rod, constituting a structure in which the push rod is extended and retracted under the control of the foot pedal and the spring in the mounting shell, so that the upper end of the push rod is positioned in cooperation with the positioning groove.

2. The axial positioning device of a cylindrical grinding machine with self-locking function as claimed in claim 1, characterized in that: The spacing between two adjacent groups of positioning grooves matches the spacing between two outer circles on the camshaft to be processed, and the number of positioning grooves in each group is the same as the number of outer circles on the camshaft to be processed.

3. The axial positioning device of a cylindrical grinding machine with self-locking function as claimed in claim 1, characterized in that: The positioning plate is provided with a positioning protrusion matched with the T-shaped groove of the axial moving platform.

4. The axial positioning device of a cylindrical grinding machine with self-locking function as claimed in claim 1, characterized in that: The positioning groove is a V-shaped structure, and the upper end of the push rod is a V-shaped protrusion matched with the positioning groove.

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